THE LEAST/MOST STRESSFUL CITIES IN THE WORLD

The results of a new ranking suggest that Germany is the world's most relaxed, zen, stress-free country, after four of its cities landed a spot on the top 10 list.

For the ranking of the "Most and Least Stressful Cities 2017," analysts studied everything from a city's density, unemployment rate, public transport and security to air pollution, traffic, social services, race relations, purchasing power, and number of sunshine days a year before assigning a score. In total, authors considered 17 factors for each city. The list ranks 150 destinations.

At the top of the heap is Stuttgart in southwest Germany, which scored particularly well in areas like green spaces, security, family purchasing power and mental health. To measure a city's well-being and mental health, authors looked at the average suicide rate and the number of psychologists per capita. Along with its green spaces, the city is also characterized as a major hub for luxury car manufacturers as Daimler (Mercedes-Benz) and Porsche are headquartered in Stuttgart.

Other German cities to crack the top 10 list include Hanover, Munich, and Hamburg. Rounding out the top five spots are Luxembourg; Hanover; Bern, Switzerland; and Munich.

Overall, European cities dominate the top 10 list, with the exception of Sydney, Australia. The top-ranked U.S. city is Seattle (No. 12), while the first time Canada makes an appearance is at No. 24, via Montreal.

The biggest common denominator that seems to thread the top-performing cities together is their size: Most are smaller, but no less cosmopolitan cities with lower population densities.

Not surprisingly, Baghdad ranks last on the list, while next to last is Kabul, Afghanistan.

Here’s the list of the top 25 least stressful cities in the world, ranked from least stressful at No. 1 and increasing from there.